Angelo heilpbin



(No Model.)

A HEILPRIN.

MUSIC LEAF TURNER.

No.253,043. Patented Jan. 31,1882.

N. PETERS, Plmurumnlnpher, wmrmgmn. n c:A

UNITED STATES PATENT OFFICE.

ANGELO HEILPRIN, OF NEV YORK, N. Y.

MUSIC-LEAF TURNER.

SPECIFICATION forming part of Letters Patent No. 253,043, dated January 31, 1882,

Application filed August 16l 1581.

To all whom it may concern Be it known that I, ANGELO HEiLPmN, a citizen of the United States, residing in the city of New York, in the county and State of New York, have invented new and Improved Music-Stands and LeafTurners, of which the following is a specification.

Letters PatentNo. 229,313, granted to me the 29th ofJ une, 1880, described a music-leaf turner applicable either to a piano or to a music-stand, and operated by a pedal attachment, said inventionembracingindependentfingers turning on a central pivot actuated by springs and controlled by a rock-shaft having detents moving in different parallel planes, so as to release the fingers successivelyfortheturningoftheleaves, as desired, under control ofthe performer, the rock-shaftlbeing, moreover, hinged to permit ,the retractionpf the detents when the fingers are to be moved back to their operative position, andbeingheldinitsnormalpositionbyaspringcatch.

Under my present improvement I have produced a music-stand with leaf-turner attachment,',more especially designed for orchestra use, though parts of the improvement are still adapted for the piano or organ.

The invention embraces an improved construction and-combination of iinger-arms and cushioning` device, as hereinafter described.

In theaccompanying drawings, Figure lis a front elevation ofamusic-stand, illustrating` the invention. Fig. 2 is ahorizontal section ofthe same on the line 2 2, Fig. 1. Fig. 3 is a side view.

a I) are respectively the upper and lower plates of the frame, and a a shelf on which the music is supported.

F is a rock-shaft mounted in suitable bearings beneath the lower plate, l), and havinga rigid arm, G, projecting horizontally from its rear end for the reception ofthe operating-rod to, which fits within a hollow rod, W, extending down to the pedal P.

The frame, of which the plates a b form apart, is mounted on a rod, A, sliding within the hollow pillar, A', so that the desk or frame may be fixed at any desired heightby meansofa thumbscrew, S. A similar thumb-screw, s, applied to the hollow pedal-rod W, fixes the extension pedal-rod w in similar manner, so as to adapt it to operate at any height of adjustment of the (No model.)

desk. In order to prevent rotation of the desk or frame on its suppoitiugstand, the rod A is made square or is nished with a longitudinal groove, a?, to receive a stud or spline projecting inwardly from the interior ofthe hollow pillar; or this function may beperformed by the thumbscrew S, il* preferred, as illustrated in Fig. 1.

On the rock-shaft F are a pair of detents, T t, formed upon a hub, as described in my original patent, before referred to, said detents being in the form of curved or oblique studs or horns projecting upwardly at different angles, and so located that as the rock-shaft is oscillated they will move in two different planes, one behind the other, so that the finger-arm, released by the rear detent, t, will be caght by the front detent, T, and when the front detent, T, is retracted to release the arm bearing against it the next arm will be detained by the rear detent, t. The pedal P is pressed up by a spring, p, so that when released by the foot it will automatically restore the detents T t to their normal position, in readiness for the next operation. The iingers are shown at D D. As before', they are each provided with a supplemental iin ger, d, parallel with the main n ger, between which and the linger D the music-leaf is placed. These fingers project rigidly upwardfrom horizontal arms (J, attached to sleeves j, iitted one above another on a central pivot, I.

Instead, however, of cinployin g helical or coiled springs, as described in my former patent, I form the needle-arms C wit-h extended heels c, to the extremities of which are connected tension-springs J, fixed at their outer ends to attaching-studs 7a.

For the purpose ofindicating springs I have shown them as made ot' coiled wire. In practice I prefer to make them of rubber, as this material is very readily applied and renewed. As in my former patent, all the arms O above the lowest are bent downward, each succeeding one more than that directly underit, so as to bring all their outer ends in one horizontal plane, as shown in Figs. l and 3. They are provided with radially-projecting stndsr, for moving them back into operative position, as before described. I have further provided the arms C with spurs or studs a,projeeting at about right angles, and impinging against a cushion, U, of rubber or other snitablevmaterial, so as to prevent noise by the contact of IOO the fingers or their arms with each other or with the frame at the termination of the stroke.

The rock-shaft F is hin ged atf, so that it may be turned down, as shown in dotted lines in Fig. 3, for the purpose of retracting the detents T t when the fingers are to be moved back into operative position, and is held up in its normal position by a spring-catch, Y, as described in my original patent, before referred to.

Having thus described my invention, the following is what I claim as new therein and dcsire to secure by Letters Patent:

The arms C C, carrying turning-fingers D D and projecting studs uu, in combination with a cushion, U, against which said studs are re- I5 ceived, as described.

ANGELO HEILPRIN. Witnesses:

GILEs F. HEILPRiN, OCTAVIUS KNIGHT. 

